All of our round copper au gratin pans are constructed of the finest quality and craftsmanship. Each pan, unless otherwise indicated, is constructed of 2.5mm bimetal which consists of 2.3mm of copper permanently bonded to 200 microns of fine austenitic stainless steel. Each copper pan has a brushed finish and satin cooking surface for beauty and ease of maintenance. Product pages include both metric and imperial measurements for your convenience.